Pinal County Climate
Pinal County, Arizona
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
70.1°F
Annual Precip
11.1"
Annual Snowfall
0.9"
Extreme Heat Days
157
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
9a
Minimum winter temperature range for plant survival
7,535
Excellent for heat-loving crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Pinal County
Climate Verdict
Pinal County has a warm, averaging 70.1°F year-round, arid conditions receiving just 11.1 inches of precipitation annually, extreme heat exposure with 157.3181818181818 days per year above 90°F, light snow averaging 0.9 inches per year. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are mild, with January temperatures averaging 52.0°F. summers are hot, with July averaging 89.5°F. The 37°F seasonal variation provides noticeable but manageable change. December is typically the coldest month and July the warmest.
Outdoor & Gardening Guidance
Summer outdoor activities should be planned for early morning or evening to avoid extreme heat.
Regional Context
Pinal County is 6.7°F warmer than the Arizona statewide average of 63.5°F, the county experiences 43.903190226440216 more extreme heat days than the state average.
Climate Profile
About Pinal County Weather
Extreme Heat in the Arizona Lowlands
Pinal County is one of the warmest places in the nation, with an annual average temperature of 70.1°F. This is more than 15 degrees higher than the national median, accompanied by a dry 11.1 inches of annual precipitation.
Well Above the Arizona Norm
Pinal County’s 70.1°F average temperature makes it significantly hotter than the state average of 63.5°F. It ranks as one of the warmest counties in Arizona, driven by intense low-elevation sun.
Bridging the Gap Between Yuma and Pima
Pinal is warmer than Pima County (68.1°F) but offers a slight reprieve compared to Yuma's 74.1°F. Its 11.1 inches of rain is fairly standard for the central Arizona corridor but triple what Yuma receives.
Dominated by Five Months of Heat
The county endures 157 days of temperatures over 90°F, creating a very long summer season. July averages 89.5°F, while winters are virtually snow-free with a January average of 52.0°F.
Extreme Heat Protection is Mandatory
With 157 extreme heat days, high-performance HVAC and home insulation are the most critical investments for residents. Outdoor activities should be limited to the early morning during the July peak to avoid the 89.5°F daily average.
Frequently Asked Questions
What is the average temperature in Pinal County?
How much rain does Pinal County get?
Does it snow in Pinal County?
How hot does Pinal County get in summer?
How cold are winters in Pinal County?
Track your own weather in Pinal County
Ambient Weather personal weather stations give you hyperlocal climate data.
Sponsored
Data sources: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020. Forecast and alert data from National Weather Service API. Air quality data from Open-Meteo.
Climate normals are 30-year averages of weather variables. Station data is aggregated to county level. Forecasts and alerts are fetched live and may change frequently. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.